2017-09-07 - shorterimage

A Gem!

The Lester A. Dine type Kiron 105mm f2.8 Macro

The Lester A. Dine Dental lens. Here branded by the OEM manufacturer Kino Precision/Kiron. Lester A. Dine invented the Ring Flash in the 1950's for dental photography and has run a successful dental accessory business through today. I've yet to figure out whether Dine commissioned this lens to be built or simply had the genius to rebrand it after Kiron first released it. I also have not been able to find the manufacturing dates. No matter, it's still one of, if not the best macro lens ever designed!

From the KEH website www.keh.com, "The Kiron Lester Dine 105mm f/2.8 Macro lens is one of the finest lens ever developed with precise focusing. The Lester Dine indicates this lens was designed for dental close-up work. The lens renders razor sharp images with vivid colors with a beautiful bokeh created by its 8-bladed diaphragm. The 105mm f/2.8 has fast aperture for optimal performance in low light or with slower transparency film. It employs 1.15ft close focusing distance producing 1:1 maximum reproduction, continuous macro focusing, six elements in six groups, 25° angle of view and 52mm filter thread. It has multi-coated for reduced flare and increased light transmission.".


f8, 1/400th sec, ISO 400


f2.8, 1/640th sec, ISO 400


f4, 1/4000th sec, ISO 100


f8, 1/320th sec, ISO 800


f8, 1/320th sec, ISO 800


f8, 1/320th sec, ISO 800


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